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MB - NG. High Throughput: Encouragement & Some Results. Lots of people helped. Data over TCP Streams. Raid0 Disk. Raid0 Disk. GridFTP. GridFTP. EU Review Demo Consisted of:. Dante Monitoring. Site Monitoring. Node Monitoring. Throughput on the day !. TCP ACKs. Data ~400 Mbit/s.

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High throughput encouragement some results

MB - NG

High Throughput: Encouragement & Some Results

Lots of people helped

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Eu review demo consisted of

Data over TCP Streams

Raid0

Disk

Raid0

Disk

GridFTP

GridFTP

EU Review Demo Consisted of:

Dante Monitoring

Site Monitoring

Node Monitoring

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Throughput on the day
Throughput on the day !

TCP ACKs

Data

~400 Mbit/s

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Some measurements of throughput cern sara
Some Measurements of Throughput CERN -SARA

  • Using the GÉANT Backup Link

    • 1 GByte file transfers

    • Blue Data

    • Red TCP ACKs

  • Standard TCP

    • Average Throughput 167 Mbit/s

    • Users see 5 - 50 Mbit/s!

  • High-Speed TCP

    • Average Throughput 345 Mbit/s

  • Scalable TCP

    • Average Throughput 340 Mbit/s

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


What the users really find
What the Users Really find:

  • CERN – RAL using production GÉANT

    • CMS Tests 8 streams

    • 50 Mbit/s @ 15 MB buffer

    • Firewall 100 Mbit/s

  • NNW – SJ4 Access

    • 1 Gbit link

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Mb ng superjanet4 development network 22 mar 02

MAN

MCC

OSM-1OC48-POS-SS

Gigabit Ethernet

2.5 Gbit POS Access

2.5 Gbit POS core

MPLS Admin. Domains

SJ4 Dev

SJ4 Dev

SJ4 Dev

PC

PC

SJ4 Dev

MB - NG

UCL

OSM-1OC48-POS-SS

3ware RAID0

3ware RAID0

PC

PC

PC

PC

MB – NG SuperJANET4 Development Network (22 Mar 02)

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


24 hours highspeed tcp mem mem

MB - NG

24 Hours HighSpeed TCP mem-mem

  • TCP mem-mem lon2-man1

  • Tx 64 Tx-abs 64

  • Rx 64 Rx-abs 128

  • 941.5 Mbit/s +- 0.5 Mbit/s

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Gridftp throughput highspeedtcp

MB - NG

Gridftp Throughput HighSpeedTCP

  • Int Coal 64 128

  • Txqueuelen 2000

  • TCP buffer 1 M byte(rtt*BW = 750kbytes)

  • Interface throughput

  • Acks received

  • Data moved

  • 520 Mbit/s

  • Same for B2B tests

  • So its not that simple!

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Gridftp throughput web100

MB - NG

Gridftp Throughput + Web100

  • Throughput Mbit/s:

  • See alternate 600/800 Mbitand zero

  • Cwnd smooth

  • No dup Ack / send stall /timeouts

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


Http data transfers highspeed tcp

MB - NG

http data transfers HighSpeed TCP

  • Apachie web server out of the box!

  • prototype client - curl http library

  • 1Mbyte TCP buffers

  • 2Gbyte file

  • Throughput 72 MBytes/s

  • Cwnd - some variation

  • No dup Ack / send stall /timeouts

GridPP Meeting Oxford 2 July 03

R. Hughes-Jones Manchester


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